I've had this 1 inch Foxface for a month now. Perfectly healthy a week ago. He started to act weird lately. He would law down on the sand and place his body against the glass. When I'm feeding he comes up for the food and acts all normal. When he goes down he stays yellow and doesn't change color. Is he okay or is there something wrong? I don't have a test kit ATM but I do water changes every 2 weeks or so. I could see him breathe somewhat heavily but not so much that he doesn't have air. Any advice? Much appreciated!

10% water change every week, with ro water. They act like that alot where I work. Do a fw dip and check for worms. Anything on the body? As in bubble looking stuff or on fins? Discolor spots on body? Nitrates might be high from doing water changes every 2 weeks. High nitrates put fish at higher risks of disease and paricites

No white spots or anything that may look parasitic on the body. Tank has been set up for 6 months now. He was added about 2 months after I added 3 baby chromis. I'll probably do a water change this weekend and see how everything goes.

Yes. Make sure the freshwater is the same temperature and pH as your tank water though. You can't keep them in there long. Over 5 minutes they die. 2 or 3 minutes is good. And will also kill any bugs and stuff that might be on him.